<!DOCTYPE html>
<html lang="zh-CN">
    <head>
        <meta charset="UTF-8" />
        <title>01_复习</title>

        <style>

            @keyframes jiale {
                0% {

                }

                100% {
                    border-radius: 50%;
                    background-color: yellowgreen;
                }
            }


            div {
                width: 100px;
                height: 100px;
                background-color: aqua;

                animation-name: jiale;
                animation-duration: 5s;
            }


        </style>
    </head>
    <body>
        <div></div>
    </body>
</html>